Coffee Caffeine Intake Calculator
Estimate your daily caffeine consumption based on brew type and volume.
How to Use the Caffeine Calculator
Caffeine content varies significantly depending on the bean type, roast profile, and brewing method. This calculator uses industry averages to help you track your daily intake. To get started, select your preferred brewing method, enter the volume of a single serving in ounces, and specify how many servings you drink per day.
Average Caffeine Levels per Method
While variables like grind size and bean origin matter, the following averages are standard for calculation:
- Drip/Filter Coffee: Approximately 12-15mg of caffeine per ounce.
- Espresso: Highly concentrated at roughly 63mg per 1oz shot.
- Cold Brew: Often higher than hot brew, averaging 18-22mg per ounce.
- Instant Coffee: Usually lower, around 8-10mg per prepared ounce.
FDA Guidelines and Safety
For healthy adults, the FDA suggests a limit of 400 milligrams of caffeine per day. This is roughly the amount in four 8-ounce cups of brewed coffee. Exceeding this limit may lead to jitteriness, insomnia, increased heart rate, or digestive issues. Pregnant individuals or those with specific medical conditions should consult a healthcare provider, as their recommended limits are typically lower (often 200mg or less).
Example Calculation
If you drink two 12-ounce cups of standard brewed coffee (Drip):
Calculation: 12mg (caffeine) x 12oz (size) x 2 (cups) = 288mg total caffeine.
This falls safely within the 400mg daily recommendation but represents a significant portion of your daily allowance.